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Nasa engineer Creon Levit said it was imperative that something was done about space junk.
美国宇航局工程师克里昂？莱维特表示，处理太空垃圾迫在眉睫。
youdao
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Nasa engineer Creon Levit said it was imperative that something was done about space junk.
美国宇航局工程师克里昂？莱维特表示，处理太空垃圾迫在眉睫。
youdao